一.填空题（共10题,100.0分）
1.Mikhail Gorbachev is _______________ with helping to bring about the end of communism in Europe.
正确答案:credited
2.She _______________ the doctor during the operation.
正确答案：assisted; assists
3._______________ valid results is a major goal of all research.
正确答案：Achieving ; achiveing;Obtaining
4.World chess champion Gary Kasparov was recently beaten by a machine which was able to _______________ its moves almost instantly.
正确答案：compute
5.Teachers in the program are _______________ by the students at the end of each session.
正确答案：evaluated
6.Fire crews rushed to the _______________ of the plane crash.
正确答案：site
7.Vitamins are best _______________ through fresh fruit and vegetables, rather than by taking pills.
正确答案：obtained
8.Calcium is the _______________ mineral needed for building and maintaining strong bones.
正确答案：primary
9.Local _______________ are delighted with the new water park for children.
正确答案：residents
10.The government has _______________ a couple of changes to the driver's licensing procedure in an attempt to reduce the number of accidents involving new drivers.
正确答案：instituted
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